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Numerical Ability
Simple & Compound Interest
Q. The difference b/w the compound interest payble half yearly and the simple interest on a certain sum lent out at 10% p.a for 1 year is Rs 25. What is the sum?
(a) Rs. 15000
(b) Rs. 12000
(c) Rs. 10000
(d) none of these
Read Solution (Total 5)
-
- in simple words S.I= PTR/100=(P*1*10)/100 P/10
HERE AMOUNT A= p+ S.I= P+ P/10=11P/10....
NOW FOR COMPOUND INTEREST WHEN CALCULATED HALF YEARLY AMOUNT=P[1+R/200]^2T=P[1+10/200]^2*1=441P/400
here its given in the question dat diff btwn simple interest and compound interest half yearly ... is 25
=> 441p/400-11p/10= 25 =>p/400=25 =>p= 400*25=10000 so sum = 10000 - 10 years agoHelpfull: Yes(15) No(0)
- since CI-SI=25
p{(1+5/100)^2 - 1}-P*10*t/100=25
p=10000 - 10 years agoHelpfull: Yes(11) No(0)
- (p(1+.05)^2-p))-(0.1p)=25
p=10000
- 10 years agoHelpfull: Yes(10) No(1)
- P(10.25/100-10/100)=25
P=10000 - 10 years agoHelpfull: Yes(1) No(0)
- P(10.25/100-10/100)=25
P=10000 - 9 years agoHelpfull: Yes(1) No(1)
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